Arovane, have you established which resolutions the VT50 accepts? It was only by fluke that I learned the VT60 can accept 1024 x 768. And then also lucky that the VT60 can handle the OSSC output.
The VT50 manual indicates that 1024 x 768 and 1280 x 768 are compatible. Need to access via Menu > picture > PC adjustments. I’m unsure if this feature is on the VT50Y as this manual is labelled with generic ‘VT50’. From personal experience my VT60A does not have certain features that the NA model has, such as the 48/60/96 hz options for 24p playback.
Anyway, the info is on page 158.